alexa An Ultra-Sensitive and Selective LC-UV Method for the Simultaneous Determination of Metformin, Pioglitazone, Glibenclamide and Glimepride in API, Pharmaceutical Formulations and Human Serum
ISSN: 2155-9872

Journal of Analytical & Bioanalytical Techniques
Open Access

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Research Article

An Ultra-Sensitive and Selective LC-UV Method for the Simultaneous Determination of Metformin, Pioglitazone, Glibenclamide and Glimepride in API, Pharmaceutical Formulations and Human Serum

Najma Sultana1 , Safila Naveed1,2* and Saeed Arayne M3

1Research Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry Faculty of Pharmacy University of Karachi, Pakistan

2Jinnah University for Women, Karachi, Pakistan

3Department of Chemistry, University of Karachi, Pakistan

*Corresponding Author:
Safila Naveed
Research Institute of Pharmaceutical Sciences
Department of Pharmaceutical Chemistry
Faculty of Pharmacy University of Karachi, Pakistan
Tel: 00921-36632471
E-mail: [email protected]; [email protected]

Received date: October 31, 2013; Accepted date: December 16, 2013; Published date: December 18, 2013

Citation: Sultana N, Naveed S, Saeed Arayne M (2013) An Ultra-Sensitive and Selective LC-UV Method for the Simultaneous Determination of Metformin, Pioglitazone, Glibenclamide and Glimepride in API, Pharmaceutical Formulations and Human Serum. J Anal Bioanal Tech 5: 176. doi: 10.4172/2155-9872.1000176

Copyright: © 2013 Sultana N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

An effective and comprehensive method for the simultaneous quantification of 4 NIDDM drugs (metformin, glimepride, glibenclamide and pioglitazone) was achieved on a Purospher Start C18 (5 μm, 25×0.46 cm) and Supelco C18 column in 2, 3, 7, 9 min respectively. The optimized method involves a C18 column thermostated at 30°C, UV detection at 235 nm, at a flow rate of 1 mL min-1. Good separation of the analytes was achieved by gradient high performance liquid chromatography-UV/visible detector (HPLC-UV/visible) in API, pharmaceutical dosages and serum, mobile phase was a mixture of methanol: water (70:30v/v) the pH of which was adjusted to 3.0 by phosphoric acid.

The method exhibited consistent, high-quality recoveries of the four analytes which ranged from 93.8 ± 2.1 to 99.8 ± 1.5 (mean ± RSD) with a high precision for the drug and impurities. Linear regression analysis revealed an excellent correlation between peak responses and concentrations (R2 values of 0.9991–0.9999) for the drug and impurities. Validation under Food and Drug Administration (FDA) guideline of the analytical parameters include: linearity (r2>0.9996), LLODs (0.315, 2.3, 0.2,0.1 ng ml-1), LLOQs (0.95, 0.7, 0.59,0.32 ng-1), intra-day precision (0.001) and inter-day precision 0.9 expressed as relative standard deviation (R.S.D.) and robustness parameters (less than 1.98%) with accuracies between 98% and 102%. The plasma assay was validated for parameters such as specificity, accuracy and extraction recovery. This is the first simultaneous characterization and quantitative determination of multiple NIDDMS. Thus, this method provides a simple, sensitive, selective, accurate and precise assay for the determination of all compounds in active pharmaceutical preparations, dosage formulations and human serum with high percentage of recovery, good accuracy precision (no interference of excepients) and a short run time. The proposed method can be extended for routine analysis of anti-diabetics in pharmaceutical preparations, biological matrices, and clinical laboratories with standard equipment, drug interaction studies and forensic medicine, recoveries ranging from 94 to 99%.

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